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S. Braenderup

At a Glance
Antigenic Formula 6,7,14:e,h:e,n,z15
Serogroup O:7 (C1)
NCBI Pathogen Detection View isolates

Background Information

Salmonella enterica subsp. enterica serovar Braenderup (antigenic formula 6,7,14:e,h:e,n,z15) is a serovar of the O:7 (C1) serogroup. Serovar Braenderup is the 10th most common serovar among human cases in the U.S. However, serovar Braenderup was found in low percentage (>1%) in animals in the U.S. One report identified that serovar Braenderup can penetrate the eggs of turtles.

Genetic Characteristics

Serovar Braenderup has been found to be monophyletic. To subtype serovar Braenderup, a phage typing scheme was created in the U.K. Among Braenderup isolates, qnrB19 emerged as the predominant AMR gene. A genomic cluster of serovar Braenderup ST22, was identified by Danish authorities as melon-outbreak-associated.

Animal Reservoir

Potential reservoirs for serovar Braenderup are cattle, chicken, pigs, horses, and turtles. However, isolation from these sources are sporadic.

Geographical Distribution

Serovar Braenderup is widely distributed, countries with reports of this serovar included countries in North America (US and Canada), Latin America (Colombia, Cuba, Venezuela), Europe (Greece, Austria, UK), and Asia (China, South Korea, Japan, Taiwan).

Human/Animal Outbreaks

Multiple outbreaks linked to serovar Braenderup have been reported; in most of these outbreaks, the associated food was produce. Below are some examples.

Year Location Associated source Number of cases
2018 US: multistate Shell eggs 45
2012 US: multistate Mangoes 127
2011 England Iceberg lettuce 29
2008 Japan Lunch boxes 176
2005 US: multistate Tomatoes 82
2004 US: multistate Tomatoes 125
1993 Switzerland Meat pie 215

Border Rejections

Year Exporting country Importing country Associated source Product category
2021 Brazil Germany Black pepper1 Herbs and spices
2021 Brazil Germany Black pepper2 Herbs and spices
2021 Brazil Germany Black pepper3 Herbs and spices

1 Multiple serovars were found including: Salmonella Braenderup, Dreetown and Abaetetuba.

2 Multiple serovars were found including: Salmonella Morehead, Javiana, Braenderup, Saintpaul, Kiambu and Minnesota.

3 Multiple serovars were found including: Salmonella Albany, Gaminara, Poona, Braenderup und Madelia.

Recalls

Year Location Recalled food Type
2024 US: multistate Cucumbers1 Fresh produce

1 This recall was caused by a multistate outbreak. Fresh Start Produce Sales Inc. of Delray, Florida, recalled their whole cucumbers.

References

  1. https://www.cdc.gov/salmonella/reportspubs/salmonella-atlas/serotype-reports.html
  2. https://pmc.ncbi.nlm.nih.gov/articles/PMC2031443/
  3. https://www.frontiersin.org/journals/microbiology/articles/10.3389/fmicb.2025.1547190/full
  4. https://europepmc.org/article/PMC/547744
  5. https://journals.asm.org/doi/10.1128/spectrum.01706-24?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub%20%200pubmed
  6. https://pubmed.ncbi.nlm.nih.gov/38179625/
  7. https://archive.cdc.gov/www_cdc_gov/salmonella/braenderup-04-18/index.html
  8. https://archive.cdc.gov/www_cdc_gov/salmonella/braenderup-08-12/index.html
  9. https://www.tandfonline.com/doi/10.1080/09603123.2011.613114?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub%20%200pubmed
  10. https://pubmed.ncbi.nlm.nih.gov/21519363/
  11. https://www.cidrap.umn.edu/foodborne-disease/cdc-warns-salmonella-risk-tomatoes
  12. https://pubmed.ncbi.nlm.nih.gov/17274858/
  13. https://www.clinicalmicrobiologyandinfection.com/article/S1198-743X(14)63162-1/fulltext
  14. https://webgate.ec.europa.eu/rasff-window/screen/notification/522139
  15. https://webgate.ec.europa.eu/rasff-window/screen/notification/521346
  16. https://webgate.ec.europa.eu/rasff-window/screen/notification/513985
  17. https://www.fda.gov/safety/recalls-market-withdrawals-safety-alerts/fresh-start-produce-sales-initiates-recall-whole-cucumbers-because-possible-health-risk